Hercules
star Rebecca, 30, was dressed in a yellow satin ballgown with asymmetric
neckline which was cinched at the waist with navy ribbon.

The
brunette also had on black high-heels but took them off before the pair lowered themselves hundreds of feet down the side of the grand building.

Brave Rebecca got into character and looked slightly daunted by the dizzying heights. Luckily however, stunt woman Lucy Cork was on standby to give assistance.

Nerve-wracking: Rebecca, 30, looked daunted as she got into character for the dramatic scene

Ready steady: The duo prepared to drop over the ledge of the grand and historic building

Revealing: Rebecca's dress got caught in a gust of wind as professional stunt woman Lucy Cork stood nearby to assist

As they stepped off the stone ledge
Rebecca's dress was caught in a breeze and the beauty's black underwear
displayed as she wrapped her legs around the Jerry Maguire star.

Professional stunt double Lucy was Tom's partner for the practise run on Friday and the duo were seen looking fearless as they stood peering over the balustrade of the historic monument.

Of course,
both were secure in harnesses as they rapelled down the front of the
impressive building, dangling hundreds of feet above the square below.

Here we go! Action man Tom held Rebecca close and she clutched her shoes as they started their descent

Back to earth: The pair were dressed to the nines as they dropped from the roof

Extreme: Rebecca wrapped her legs around Tom as the pair whizzed down ropes in the action-packed scene

In a clinch: The pair got up close and personal as they made their decent and kept smiling throughout

Battling the elements: Suri's dad was seen hanging out beneath an umbrella as the weather passed

There he is! Tom wore a suit jacket and crisp white shirt as he filmed the long awaited movie

The pair laughed and chatted as they hung in the air, waiting for the crew to haul them back up or let them down.

It's
18 years since Tom starred in the first Mission: Impossible but he
barely looked a day older as director Christopher McQuarrie began
filming the latest movie in the blockbuster franchise on Wednesday.

Although
it's Christopher's first M:I he and the Top Gun hero are frequent
collaborators having worked together on Jack Reacher, Valkyrie and
recent summer sci-fi film Edge Of Tomorrow.

Thank you: The actor had somebody hold his umbrella for him as he chatted with crew

Preparing: Rebecca Ferguson was wrapped up in a snug green coat in between shots

Impressive feat: Tom and stunt woman Lucy Cork dangled on ropes hundreds of feet in the air, as they tried a tricky stunt on Friday

And here's how they got there: The action star, who is famous for doing his own stunts, checked out the top of the building with director Christopher McQuarrie, left